Rev 132 - May 26-Jun 11, 2010 - Rhea |
Rev 132 - May 26-Jun 11, 2010 - Rhea |
May 27 2010, 05:34 PM
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#1
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Member Group: Members Posts: 655 Joined: 22-January 06 Member No.: 655 |
Jason's looking ahead article now available over at ciclops for the next revolution. Great Titan flyby, a look at Rhea, and a far-out (100,000km +) view of Pandora. It will be great to see the other side of Pandora, as the moon seems to have been neglected somewhat (other competing targets of course...) since the flyby five years ago.
Thanks Jason, always appreciated that we're able to be party to upcoming goodies. |
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Jun 4 2010, 06:33 PM
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#2
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Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
Here's Pandora... start and end of the sequence, three frames averaged, with little change in orientation but some change in illumination.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jun 4 2010, 06:36 PM
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#3
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Damn, Phil, I just checked for the raws half an hour ago and they weren't up yet. Quick work! Got a few Rhea pics up there now too.
-------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Jun 4 2010, 09:37 PM
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#4
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Beautiful, Phil.
Strange-looking thing; oddly looks like a model of itself with the bright (ice?) glints off the crater rims & the subdued topography from ring material deposition. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Jun 5 2010, 02:26 AM
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#5
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
i swear that i cooked that thing with dinner
sliced and browned in a cast iron skillet |
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Jun 5 2010, 05:39 AM
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#6
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
6-frame mosaic of Rhea (go on! I dare ya to find the seams!):
A big 4000 x 4000 pixel original size image in all it's icy cratery goodness can be viewed here: http://www.flickr.com/photos/31678681@N07/4670487271/ But there's something kinda strange in this image.... -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Jun 5 2010, 05:45 AM
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#7
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
Anybody know what this is? This is an unaltered crop from image N00154971 (I even left the dropouts in).
The strange linear feature in the center of the image angles across the JPEG artifacts. Shading comparison with craters would indicate it is a straight trench if it is a surface feature. -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Jun 5 2010, 06:00 AM
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#8
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
I'm going to go out on a limb and suggest that something passed between Cassini and Rhea as the picture was being taken.
Here's the full image deinterlaced. -------------------- If Occam had heard my theory, things would be very different now.
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Jun 5 2010, 06:02 AM
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#9
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
this shows it all - a chain
[attachment=21841:Screenshot.png] cleaned up and most jpg artifacts removed [attachment=21842:N00154971.png] i have been seeing these things all over the place come to think of it isn't there a thread on that someplace ? |
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Jun 5 2010, 06:18 AM
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#10
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
It's a real surface feature!
Using Celestia, and Tirawa Crater as a reference, I reckon this feature is at [-37S, 173W] in this image. A peek at Planetary Photojournal image PIA12561 (Map of Rhea - February 2010) and you can clearly see it at the same location [-35S, 170W] in lower left near the edge of the map]. Shading also appears to make this feature as a trench also. -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Jun 5 2010, 11:23 AM
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#11
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Newbie Group: Members Posts: 6 Joined: 8-July 09 From: Glen Waverley, Melbourne, Australia Member No.: 4858 |
Great view of Daphinis and another moon creating waves in the latest batch of images on the Cassini raw images page
ttp://saturn.jpl.nasa.gov/multimedia/images/raw/casJPGFullS60/N00154943.jpg Part of a sequence of images of the rings starting here http://saturn.jpl.nasa.gov/photos/raw/inde...storedQ=2239945 Cheers |
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Jun 5 2010, 12:16 PM
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#12
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Member Group: Members Posts: 933 Joined: 4-September 06 From: Boston Member No.: 1102 |
Wow, those are among some of the best shots of Daphinis and its bending waves ever taken. Surprised the viewing is so good several months past equinox. Pan is the other moon and the view of its induced waves is also amazing.
link to image [nomisn's first link is missing an "h" at the start] If I am interpreting this correctly, we are not seeing shadows projected on the rings, like at equinox, but rather different light reflecting off crests and valleys of induced waves in the ring plane. -------------------- |
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Jun 5 2010, 12:43 PM
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#13
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Newbie Group: Members Posts: 6 Joined: 8-July 09 From: Glen Waverley, Melbourne, Australia Member No.: 4858 |
Sorry. Thanks Floyd for the correct link. Wow indeed. I agree. One of the best Daphinis wave images so far.
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Jun 5 2010, 01:35 PM
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#14
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Senior Member Group: Members Posts: 3008 Joined: 30-October 04 Member No.: 105 |
QUOTE It's a real surface feature! (The strange linear feature) I've puzzled over that before. Straight and uniform with respect to topography, it almost looks "artificial". I concluded that, with all of the crater chains, ejecta scars and tectonic featuress we've seen on the Icy Moons this one just happens to be straight and uniform.QUOTE Wow, those are among some of the best shots of Daphinis and its bending waves And another amazing image in this batch. In a couple of years (or more?) of looking at Daphnis' bending waves, I don't ever recall seeing them this pronounced and extreme. I wonder if anything has changed at Daphnis to create this difference? Again, it may be one of these statistical fluctuations...--Bill -------------------- |
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Jun 5 2010, 02:00 PM
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#15
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
It's a real surface feature! A peek at Planetary Photojournal image PIA12561 (Map of Rhea - February 2010) and you can clearly see it at the same location [-35S, 170W] in lower left near the edge of the map]. Shading also appears to make this feature as a trench also. I agree but would call it a fracture. No way it's a chain though. -------------------- If Occam had heard my theory, things would be very different now.
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